Also, add some comments about what it's for...

function calls to work.

by Chih-Chang Hsi. See "A Patch for MIC to EUC_TW code converting in
mb support" posting in pgsql-patches list dated 09 Nov 2000.

race condition --- old backend may not have shut down by the time we
try to do the DROP.

'make test' target.

wise the next bit string in the same command clobbers the previous ones.

maintained for each cache entry.  A cache entry will not be freed until
the matching ReleaseSysCache call has been executed.  This eliminates
worries about cache entries getting dropped while still in use.  See
my posting to pg-hackers of even date for more info.

owned, which can be annoying.

should have read:

Alfred Perlstein

    <entry>varchar(n)</entry>
        <entry>(4+x) bytes</entry>

should be
   <entry>varchar(n)</entry>
        <entry>(4+n) bytes</entry>

or
   <entry>varchar(x)</entry>
        <entry>(4+x) bytes</entry>

Regards

Laser Henry

Context diff this time.

Remove -m486 compile args for FreeBSD-i386, compile -O2 on i386.

Compile with only -O on alpha for codegen safety.

Make the port use the TEST_AND_SET for alpha and i386 on FreeBSD.

Fix a lot of bogus string formats for outputting pointers (cast to int
and %u/%x replaced with no cast and %p), and 'Size'(size_t) are now
cast to 'unsigned long' and output with %lu/

Remove an unused variable.

Alfred Perlstein

Here is one with a stray character removed.

Larry Rosenman

This code still needs a lot of love, however ...

at postmaster start, rename syslog_progid to syslog_ident, since syslog
itself uses that term, fix doc markup.

cloned, rather than always cloning template1.  Modify initdb to generate
two identical databases rather than one, template0 and template1.
Connections to template0 are disallowed, so that it will always remain
in its virgin as-initdb'd state.  pg_dumpall now dumps databases with
restore commands that say CREATE DATABASE foo WITH TEMPLATE = template0.
This allows proper behavior when there is user-added data in template1.
initdb forced!

in AlterTableOwner().

leading slash to behave as a unix socket path.

adds the facility to set the program name used in syslog.
(this includes the other ones).

One gotcha, the parser doesn't like special characters in strings.
For example, i tried to use pg-test, and if failed the parse coming
from the postgresql.conf file.

I don't think it's a showstopper..

Larry Rosenman

hosting product, on both shared and dedicated machines.  We currently
offer Oracle and MySQL, and it would be a nice middle-ground.
However, as shipped, PostgreSQL lacks the following features we need
that MySQL has:

1. The ability to listen only on a particular IP address.  Each
   hosting customer has their own IP address, on which all of their
   servers (http, ftp, real media, etc.) run.
2. The ability to place the Unix-domain socket in a mode 700 directory.
   This allows us to automatically create an empty database, with an
   empty DBA password, for new or upgrading customers without having
   to interactively set a DBA password and communicate it to (or from)
   the customer.  This in turn cuts down our install and upgrade times.
3. The ability to connect to the Unix-domain socket from within a
   change-rooted environment.  We run CGI programs chrooted to the
   user's home directory, which is another reason why we need to be
   able to specify where the Unix-domain socket is, instead of /tmp.
4. The ability to, if run as root, open a pid file in /var/run as
   root, and then setuid to the desired user.  (mysqld -u can almost
   do this; I had to patch it, too).

The patch below fixes problem 1-3.  I plan to address #4, also, but
haven't done so yet.  These diffs are big enough that they should give
the PG development team something to think about in the meantime :-)
Also, I'm about to leave for 2 weeks' vacation, so I thought I'd get
out what I have, which works (for the problems it tackles), now.

With these changes, we can set up and run PostgreSQL with scripts the
same way we can with apache or proftpd or mysql.

In summary, this patch makes the following enhancements:

1. Adds an environment variable PGUNIXSOCKET, analogous to MYSQL_UNIX_PORT,
   and command line options -k --unix-socket to the relevant programs.
2. Adds a -h option to postmaster to set the hostname or IP address to
   listen on instead of the default INADDR_ANY.
3. Extends some library interfaces to support the above.
4. Fixes a few memory leaks in PQconnectdb().

The default behavior is unchanged from stock 7.0.2; if you don't use
any of these new features, they don't change the operation.

David J. MacKenzie

that search loops only have to scan that far and not through all maxBackends
entries.  This eliminates a performance penalty for setting maxBackends
much higher than the average number of active backends.  Also, eliminate
no-longer-used 'backend tag' concept.  Remove setting of environment
variables at backend start (except for CYR_RECODE), since none of them
are being examined by the backend any longer.